螺旋CT评价青少年与成年人牙槽骨皮质骨密度及厚度的差异

发布时间：2018-06-17 20:24

本文选题：皮质骨厚度 + 皮质骨密度　；参考：《实用口腔医学杂志》2017年05期

【摘要】：目的:通过螺旋CT测量,评价不同年龄(青少年12~18岁,成年人19~48岁)、性别及位置在牙槽骨皮质骨的厚度及密度的差别。方法:对60例12~48周岁患者(男27例,女33例,青少年组35例,成人组25例)进行颌骨螺旋CT扫描,在12个牙根间部位测量牙槽嵴顶至14 mm高度的颊侧皮质骨厚度及灰度值。结果:上下颌骨的皮质骨厚度及密度总体趋势表现为随着距牙槽嵴顶垂直距离增大而增大。上下颌前部皮质骨厚度平均为1.0~1.5 mm。上颌后部厚度为1.1~1.8 mm,下颌后部为1.5~2.8 mm。下颌后部皮质骨厚度及密度明显高于上颌后部(P0.05)。皮质骨厚度无明显年龄及性别差异,而青少年皮质骨密度明显低于成年人(P0.05)。成年人下颌后部骨密度最高,而青少年时期上颌后部骨密度最低。结论:青少年皮质骨密度明显低于成年人,上颌后部最低,而成年患者的下颌后部皮质骨较厚且硬度较大。
[Abstract]:Objective: to evaluate the difference of the thickness and density of alveolar cortical bone in different ages (12 ~ 18 years old in adolescents and 19 ~ 48 years old in adults) by spiral CT measurement. Methods: 60 patients (male 27, female 33, adolescent 35, adult 25) were examined with spiral CT. The thickness and gray value of the buccal cortical bone at the top of alveolar ridge to the height of 14 mm were measured in 12 interdental roots. Results: the cortical bone thickness and density of the maxillary and mandibular bone increased with the vertical distance from the alveolar crest. The average thickness of cortical bone in the anterior part of the upper and lower mandible was 1.0 ~ 1.5 mm. The thickness of the posterior part of the maxilla was 1.1 mm and the posterior part of the mandible was 1.5 mm2. The thickness and density of posterior mandibular cortical bone were significantly higher than that of maxillary posterior cortex (P 0.05). There was no significant age and gender difference in cortical bone thickness, while the bone mineral density of cortex in adolescents was significantly lower than that in adults (P 0.05). The bone mineral density of the posterior part of the mandible was the highest in adults and the lowest in adolescence. Conclusion: the bone mineral density of juvenile cortex is significantly lower than that of adults, and the posterior maxillary bone is the lowest, while the posterior mandibular cortical bone of adult patients is thicker and harder.
【作者单位】：河北医科大学第二医院口腔正畸科;宁波口腔医院正畸科;河北医科大学第三医院口腔科;
【分类号】：R783.5

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